Scraper sites, feed stealers and any other content theivery is not good when you are the victim.  They can create big problems that will hurt your website and possibly lower your traffic.  But they also create a silver lining for all of the havoc they bring.  Be smart and enjoy the silver lining and minimize the havoc.

HAVOC 

The real problem of these sites is duplicate content issues.  Most of the time the search engines will be able to figure out the content was published on your site first and that you have more links than the stealer so it is not a big problem.  If your site is smaller and does not have alot of links you will likely get hurt more by content stealers.  The best defense is to build up your link popularity and find ways to get your site crawled more often.  When you do come across a scraper or feed stealer go after and email them and their hosting company.

SILVER LINING

Most of the time these sites will copy your content exactly which means they will also copy the links in your content.  This actually helps you gain link popularity.  Do not be afraid of getting these links since they are coming from a “bad site”.   You are only in danger if you link to the sites.  Getting links from these scraper sites can actually help you of course it would be much more helpful if they never stole your content and left you alone in the first place.

Speak up and be heard: